dates,lower16,median,upper84
1-Jan-67,0.838388364,1.540345089,2.217846124
1-Apr-67,0.775598039,1.487884766,2.165460687
1-Jul-67,0.702346078,1.516123666,2.303135243
1-Oct-67,0.640646872,1.526960649,2.38631022
1-Jan-68,0.596465735,1.571562363,2.523187179
1-Apr-68,0.579784557,1.596751292,2.594807213
1-Jul-68,0.605128507,1.522797842,2.427030922
1-Oct-68,0.58776428,1.512129633,2.423920856
1-Jan-69,0.637306865,1.588542681,2.528071594
1-Apr-69,0.602522455,1.66288262,2.734321527
1-Jul-69,0.635508674,1.648014573,2.678839568
1-Oct-69,0.626060998,1.598378136,2.568006764
1-Jan-70,0.649991094,1.58252561,2.508174404
1-Apr-70,0.637586612,1.543548111,2.438835085
1-Jul-70,0.621805187,1.50281217,2.370985541
1-Oct-70,0.436097054,1.410032477,2.355010229
1-Jan-71,0.47986869,1.41305381,2.306006638
1-Apr-71,0.544130282,1.47637014,2.39193399
1-Jul-71,0.65095138,1.532016085,2.394353843
1-Oct-71,0.766958281,1.479880664,2.159202146
1-Jan-72,0.680193619,1.461465727,2.213199752
1-Apr-72,0.763195914,1.581458475,2.382042084
1-Jul-72,0.759599688,1.565812099,2.350969338
1-Oct-72,0.802249565,1.592789648,2.36879676
1-Jan-73,0.772859221,1.660440912,2.53738541
1-Apr-73,0.458425583,1.627361996,2.7708502
1-Jul-73,0.306522703,1.660676743,3.027941923
1-Oct-73,0.380358137,1.55824371,2.706012202
1-Jan-74,0.184463569,1.439319953,2.654949
1-Apr-74,-0.365499652,1.457219228,3.21336684
1-Jul-74,-0.649768221,1.376944576,3.342608259
1-Oct-74,-0.373764142,1.249713031,2.774893335
1-Jan-75,-0.192268647,1.225041876,2.416443396
1-Apr-75,0.123581327,1.307208491,2.35457824
1-Jul-75,0.277911736,1.427282036,2.530412584
1-Oct-75,0.244216355,1.402988276,2.525544339
1-Jan-76,0.307873234,1.430389868,2.527338943
1-Apr-76,0.465818617,1.473603932,2.456750088
1-Jul-76,0.340134251,1.426190933,2.493452285
1-Oct-76,0.286173116,1.398424273,2.487520794
1-Jan-77,0.251949817,1.410147183,2.560994635
1-Apr-77,0.35360978,1.479875374,2.610342868
1-Jul-77,0.346631982,1.489353496,2.645206079
1-Oct-77,0.448088314,1.518970046,2.61719843
1-Jan-78,0.463456683,1.529630081,2.618172348
1-Apr-78,0.479504032,1.640706675,2.880471063
1-Jul-78,0.489983925,1.641104809,2.873220873
1-Oct-78,0.535143911,1.743862922,3.073506103
1-Jan-79,0.710153282,1.715968666,2.805258896
1-Apr-79,0.48190633,1.697258089,3.017905548
1-Jul-79,0.596114616,1.799908847,3.147080399
1-Oct-79,0.653941545,1.973251651,3.568819471
1-Jan-80,0.590164661,2.002048513,3.714497865
1-Apr-80,0.487410797,1.674642798,2.925441588
1-Jul-80,0.475519621,1.642082231,2.814941379
1-Oct-80,0.889339704,2.360684915,4.432457441
1-Jan-81,1.005932153,2.213684435,3.816175424
1-Apr-81,1.175147446,2.274761,3.83040033
1-Jul-81,1.25330031,2.257450088,3.68435216
1-Oct-81,1.006126566,1.848259124,2.750113627
1-Jan-82,1.31718494,2.190504523,3.368083926
1-Apr-82,1.425193795,2.266046258,3.457933778
1-Jul-82,1.118981337,1.862835151,2.647393864
1-Oct-82,1.203355344,1.929259755,2.731057327
1-Jan-83,1.336176897,2.044332309,2.866433901
1-Apr-83,1.478668961,2.107276661,2.880592565
1-Jul-83,1.507447418,2.25638293,3.252235692
1-Oct-83,1.551842848,2.219844756,3.113684569
1-Jan-84,1.582276124,2.264339621,3.196359006
1-Apr-84,1.632023141,2.401233875,3.53285639
1-Jul-84,1.619510703,2.339846346,3.390053951
1-Oct-84,1.446451733,2.023581981,2.699136828
1-Jan-85,1.454175159,2.090932019,2.863886004
1-Apr-85,1.469649699,2.067349526,2.779982408
1-Jul-85,1.545447746,2.166891768,2.952442417
1-Oct-85,1.532991902,2.124064906,2.85274497
1-Jan-86,1.470692539,2.057506136,2.746670795
1-Apr-86,1.432041971,1.985644907,2.604021977
1-Jul-86,1.368693807,1.909727969,2.477175955
1-Oct-86,1.472030321,2.028882494,2.668348521
1-Jan-87,1.430799137,1.97225352,2.568901779
1-Apr-87,1.557863306,2.156037698,2.895574459
1-Jul-87,1.511885982,2.095798983,2.792472094
1-Oct-87,1.523657279,2.119557974,2.832322969
1-Jan-88,1.450491594,2.025555754,2.67104434
1-Apr-88,1.525953694,2.145051795,2.896903347
1-Jul-88,1.596215679,2.240029041,3.07333113
1-Oct-88,1.607879144,2.242792378,3.058060241
1-Jan-89,1.681757523,2.350087666,3.273817226
1-Apr-89,1.631283172,2.253576718,3.063517745
1-Jul-89,1.550083625,2.125503473,2.813558933
1-Oct-89,1.528895892,2.104703572,2.790053287
1-Jan-90,1.552414246,2.165052686,2.917932015
1-Apr-90,1.555584152,2.177194836,2.949136943
1-Jul-90,1.509024542,2.101512471,2.80363865
1-Oct-90,1.369153471,1.93091034,2.517286419
1-Jan-91,1.182368525,1.758831365,2.292581961
1-Apr-91,1.365245997,1.910472723,2.4674316
1-Jul-91,1.408432712,1.96334825,2.550151025
1-Oct-91,1.246806298,1.80308631,2.337592586
1-Jan-92,1.194828385,1.755813773,2.277800307
1-Apr-92,1.268507714,1.813030917,2.344976187
1-Jul-92,1.130518809,1.692302998,2.212003293
1-Oct-92,1.218220512,1.771580872,2.309144544
1-Jan-93,1.187395459,1.751701803,2.290444512
1-Apr-93,1.203526832,1.770960473,2.319521775
1-Jul-93,1.191756847,1.755085388,2.297337621
1-Oct-93,1.182691372,1.747119042,2.287621514
1-Jan-94,1.284788568,1.84540824,2.408061319
1-Apr-94,1.523788866,2.106682737,2.766136802
1-Jul-94,1.532837473,2.133740242,2.821171827
1-Oct-94,1.600885328,2.238721724,2.98866741
1-Jan-95,1.599818852,2.259186121,3.040248928
1-Apr-95,1.537312206,2.189181261,2.941361085
1-Jul-95,1.518864064,2.177488614,2.927273914
1-Oct-95,1.511860976,2.173492441,2.928694272
1-Jan-96,1.392675244,2.047465353,2.751998591
1-Apr-96,1.522862209,2.202031872,2.972282236
1-Jul-96,1.547964616,2.242911318,3.039611633
1-Oct-96,1.526758714,2.220948821,3.008613792
1-Jan-97,1.478646399,2.177295359,2.957983454
1-Apr-97,1.616969086,2.355514987,3.221174722
1-Jul-97,1.516090524,2.254762795,3.102591466
1-Oct-97,1.467163975,2.200762587,3.033890808
1-Jan-98,1.540507511,2.303654742,3.200020559
1-Apr-98,1.500764318,2.259138435,3.137019421
1-Jul-98,1.6017462,2.392159518,3.341243276
1-Oct-98,1.331819628,2.047144127,2.818975569
1-Jan-99,1.375183533,2.098851367,2.894091004
1-Apr-99,1.404059837,2.118291996,2.921723733
1-Jul-99,1.558926606,2.317759226,3.219515981
1-Oct-99,1.614125789,2.388866309,3.316777375
1-Jan-00,1.577999153,2.34659617,3.259113136
1-Apr-00,1.694519206,2.540610115,3.584360434
1-Jul-00,1.565930856,2.352782283,3.299323646
1-Oct-00,1.528712715,2.293295757,3.209682654
1-Jan-01,1.240716572,1.912633145,2.639225164
1-Apr-01,1.008402301,1.656817473,2.300297176
1-Jul-01,0.753882911,1.42741452,2.055054595
1-Oct-01,0.485732783,1.205343483,1.833377358
1-Jan-02,0.788659194,1.441471639,2.055128926
1-Apr-02,1.015801965,1.645363703,2.276962966
1-Jul-02,0.896617663,1.540463532,2.166339473
1-Oct-02,0.579640977,1.270199051,1.897212671
1-Jan-03,0.67743343,1.344554166,1.969939294
1-Apr-03,0.742846806,1.400131141,2.015914004
1-Jul-03,0.864371677,1.504046401,2.128602752
1-Oct-03,0.891994189,1.527188721,2.154505341
1-Jan-04,0.757167455,1.414850656,2.047582365
1-Apr-04,0.716931355,1.389487617,2.02665946
1-Jul-04,0.905707912,1.539324456,2.179637384
1-Oct-04,1.073671248,1.710767922,2.381322624
1-Jan-05,1.187973449,1.857270361,2.58088719
1-Apr-05,1.189361252,1.85235297,2.574369825
1-Jul-05,1.273218253,1.959700222,2.724284377
1-Oct-05,1.294117023,2.003848015,2.803141178
1-Jan-06,1.472753372,2.239036317,3.142556703
1-Apr-06,1.497489059,2.304716458,3.284016801
1-Jul-06,1.399953729,2.179250695,3.10012621
1-Oct-06,1.291220261,2.042127547,2.894183803
1-Jan-07,1.371972406,2.155522578,3.071724171
1-Apr-07,1.343810803,2.127649295,3.032178447
1-Jul-07,1.360993267,2.157823446,3.087947627
1-Oct-07,1.130324781,1.885063726,2.70433115
1-Jan-08,0.341147928,1.121371388,1.813192725
1-Apr-08,0.358017836,1.116350891,1.805310833
1-Jul-08,0.394503356,1.162854973,1.866187929
1-Oct-08,-1.149222239,0.057608697,0.977639803
1-Jan-09,-0.357682326,0.614698071,1.4236369
1-Apr-09,0.220779527,1.017993806,1.746763749
1-Jul-09,0.373291862,1.126811121,1.836927427
1-Oct-09,0.587230755,1.346505674,2.084663649
1-Jan-10,0.063640769,0.88732741,1.613795384
1-Apr-10,0.004606748,0.835241221,1.568552631
1-Jul-10,0.117205258,0.920895361,1.646341765
1-Oct-10,0.098191685,0.911886797,1.643458348
1-Jan-11,0.196259902,1.009948699,1.757793421
1-Apr-11,0.174860728,1.023606757,1.779013276
1-Jul-11,-0.035227224,0.840731472,1.596983284
1-Oct-11,-0.031701071,0.81996919,1.567930791
1-Jan-12,0.031926038,0.911570507,1.689637257
1-Apr-12,-0.000410281,0.861329635,1.62955037
1-Jul-12,-0.046531795,0.800248242,1.560329675
1-Oct-12,-0.04577521,0.814153924,1.575276598
1-Jan-13,0.077657447,0.899892306,1.645977336
1-Apr-13,0.148751525,0.941389442,1.676537555
1-Jul-13,0.167703098,0.958971359,1.693123141
1-Oct-13,0.138911894,0.947435332,1.685229809
1-Jan-14,-0.035330411,0.794444129,1.539970853
1-Apr-14,0.274933923,1.051148259,1.787352538
1-Jul-14,0.217322912,0.998455545,1.726820771
1-Oct-14,0.106058421,0.895209877,1.624131864
1-Jan-15,0.183712677,0.955612466,1.68315913
1-Apr-15,0.153502002,0.948938619,1.68155506
1-Jul-15,0.204731827,0.9866912,1.720661045
1-Oct-15,0.108587534,0.901685153,1.638376554
1-Jan-16,0.317527526,1.079907606,1.817247042
1-Apr-16,0.143468539,0.950974367,1.695783692
1-Jul-16,0.361698308,1.120231747,1.847359635
1-Oct-16,0.258907191,1.015498042,1.730916687
1-Jan-17,0.36594905,1.113971309,1.829131179
1-Apr-17,0.537008163,1.25000971,1.959889438
1-Jul-17,0.702678808,1.396245995,2.113928753
1-Oct-17,0.739793721,1.433733155,2.143997111
1-Jan-18,0.829077965,1.542256736,2.290966831
1-Apr-18,0.889888988,1.600644282,2.356155055
1-Jul-18,0.761041457,1.458147614,2.163339032
1-Oct-18,0.783661258,1.484772527,2.198421334
1-Jan-19,0.910108415,1.607960679,2.333962527
1-Apr-19,1.006117932,1.702116359,2.433454933
1-Jul-19,0.942521353,1.630530109,2.340627681
1-Oct-19,0.529202709,1.256501138,1.925047375
1-Jan-20,0.255274585,1.056667245,1.752564769
1-Apr-20,-1.954051453,-0.255012698,0.932382727
1-Jul-20,1.37197749,2.107463245,3.001115981
1-Oct-20,0.767556133,1.508480894,2.227640198
1-Jan-21,0.667314614,1.418023543,2.118629261
1-Apr-21,0.688187642,1.610418316,2.506826406
1-Jul-21,0.038672965,1.134554133,2.032152375
1-Oct-21,0.355303447,1.385505365,2.284185243
1-Jan-22,-0.257060829,1.038504555,2.048237833
1-Apr-22,0.148729596,1.266924064,2.187676334
1-Jul-22,1.063288092,1.949523163,2.968973963
1-Oct-22,1.318417759,2.158053002,3.217322329
1-Jan-23,1.359078821,2.183221689,3.226610038
1-Apr-23,1.436718771,2.225629282,3.243922926
1-Jul-23,1.412734788,2.125755458,2.987854397
1-Oct-23,1.424041498,2.137359663,2.999045843
1-Jan-24,1.466171456,2.232743032,3.206553431
1-Apr-24,1.537922072,2.33052237,3.372863838
1-Jul-24,1.469779579,2.229926899,3.181122122
1-Oct-24,1.15149319,1.85812083,2.606215214